7507539449 has 4 divisors (see below), whose sum is σ = 7514616420. Its totient is φ = 7500462480.

The previous prime is 7507539443. The next prime is 7507539467. The reversal of 7507539449 is 9449357057.

7507539449 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9449357057 = 7 ⋅1349908151.

It can be written as a sum of positive squares in 2 ways, for example, as 3863244025 + 3644295424 = 62155^2 + 60368^2 .

It is a cyclic number.

It is not a de Polignac number, because 7507539449 - 2¹² = 7507535353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7507539449.

It is not an unprimeable number, because it can be changed into a prime (7507539443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3536894 + ... + 3539015.

It is an arithmetic number, because the mean of its divisors is an integer number (1878654105).

Almost surely, 2^7507539449 is an apocalyptic number.

It is an amenable number.

7507539449 is a deficient number, since it is larger than the sum of its proper divisors (7076971).

7507539449 is a wasteful number, since it uses less digits than its factorization.

7507539449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7076970.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The square root of 7507539449 is about 86646.0584735393. The cubic root of 7507539449 is about 1958.0895108076.

The spelling of 7507539449 in words is "seven billion, five hundred seven million, five hundred thirty-nine thousand, four hundred forty-nine".